Object Class: Euclid.
Description: A plain blue inhaler will no noticeable markings except a black tar-like substance in the very bottom of the inhaler. Tests are yet to find out if this is the SCP of it is the unit itself that holds the anomalous properties.

An inhaler that causes the user to rapidly become better before starting to feel a blazing pain in their chest. Medical examinations of infected instances , SCP-[DATA EXPUNGED]-2, have been shown to being to grow multiple pairs of lungs, all functioning giving the infected the ability to breathe underwater. Once 5 sets of lungs have been grown, they start to spread a corrosive similar to that of SCP-069 , through the blood stream until the brain is reached. At this stage of the infection, infected will lack higher brain function, and will attempt to pass on the infection to the closest human subject. Instances have been shown to release what is presumed to be the gas contained in SCP-[REDACTED].Multiple tests have been done and it seems that the only thing that can kill these infected are mass doses of radiation along with some Keter level SCP's.

Instances of SCP-[REDACTED]-2 cannot be hurt by flame, acid or bullets. The only thing that seems to have any effect of these instances are high-level alkali substances. At no time, under no authorisation, are any staff to approach instances of SCP-[REDACTED]-2. You should call a member of staff immediately if one is spotted.

Containment: SCP-[REDACTED] is to be kept in a secure, hermetically sealed box of titanium-tungsten alloy measuring 5m x 5m x 5m. Opening of this box and experimentation is only permissible by Level-4 staff or higher due to Experiment-102 through Experiment 106.

Experiment Log: Experiment-102.
Objective: To find out the properties of SCP-[REDACTED]
Procedure: Class-D personnel instructed to inhale 3 puffs from the SCP, 10 seconds between the puffs. Then lock the subject into the room. Await results.
Results: Subject did as instructed. 10 minutes passed. Subject reported feelings of much more air in lungs than normal. Subject then started to run around the room, doing various different exercises, exclaiming that he felt "Like I can run forever!"

Subject has passed out from the pain. Monitors show vital signs cease at approximately [00/00/00]

Subject has reanimated, although no longer possesses higher brain function. Noxious gas has stared emitting from subjects mouth and eyes have become pinpoints. Soldiers of MTF STIKEFORCE enter wearing gas masks. Subject launches towards nearest solider, ripping off his face mask and began to breath the gas into the soldiers mouth.
MTF soldiers begin to fire rifles into the subject with no effect. Door was locked by outside to observe what would happen. Subject continued to take down soldiers with miraculous strength and not once being winded until all soldiers had been turned into what is now SCP-[DATA EXPUNJED]-2.

Experiment log: Experiment-104
Objective: Find out potential weakness' SCP-[DATA EXPUNJED]-2
Procedure: Both explosives and bullets seemed to do nothing to SCP-[DATA EXPUNDJED]-2. Door was opened by robot drone once again, this time with Molotov cocktail strapped to it with small detonator on the side of the bottle. Molotov explodes engulfing SCP-[DATA EXPUNJED]-2. Flames die out after 3 minutes. No damage done to instance.

Experiment log: Experiment-106
Objective: Find out potential weakness' SCP-[DATA EXPUNJED]-2
Procedure: Drone reopened door with jar of high level alkali strapped to it. Small detonator attached to it. Drone flown over instance. Detonation. INSTANT REACTION. SCP-[DATA EXPUNJED]-2 screams with a animalistic roar and begins to flail round the room hitting every instance as it does so. Instances begin to cry out. Target instance collapses and live signs cease finally. The rest of the SCP'S dispatched in similar fashion. Autopsy reveals several extra pairs of lungs along with a corrosion level never before seen at the foundation although it cannot spread unless spread through the instance of SCP-[DATA EXPUNDJED]-2 whilst they are alive.

Experiment log concludes.

No full drafts in the forums, please. Make a sandbox page, put your draft there, and link it from the thread. ~Zyn

First: You need to put this in a sandbox page.
Second: You need to follow the format that's laid out in How to write an SCP.
Third: I couldn't finish what you have posted. There are too many run-on sentences in the first couple of paragraphs. Please proofread your work before you put it up for review, it makes the reviewers' lives easier.

Erm… the full text of your draft did get posted to the forum, but it was collapsed (you can click the red text to reveal it again) because you're not supposed to post the entirety of a draft to the forums. What you should do is make a page on the sandbox site, work on your draft there, and then when you ask about it in forums, post a link toi your sandbox page. This is covered in the How to Write an SCP Guide, and you can also look at other people's threads here to see how things are done.